Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Andrew Shepherd"'
Publikováno v:
Journal of Geophysical Research: Oceans. 124:7473-7485
Autor:
Finnur Pálsson, Aud Venke Sundal, Noel Gourmelen, Sang-Wan Kim, Andrew Shepherd, Helgi Björnsson, J. Park
Publikováno v:
Gourmelen, N, Kim, S W, Shepherd, A, Park, J W, Sundal, A V, Björnsson, H & Pálsson, F 2011, ' Ice velocity determined using conventional and multiple-aperture InSAR ', Earth and Planetary Science Letters, vol. 307, no. 1-2, pp. 156-160 . https://doi.org/10.1016/j.epsl.2011.04.026
We combine conventional Interferometric Synthetic Aperture Radar (InSAR) and Multiple Aperture InSAR (MAI) to determine the ice surface velocity on the Langjokull and Hofsjokull ice caps in Iceland in 1994. This approach allows the velocity of the 20
Publikováno v:
Earth and Planetary Science Letters. 302:423-428
We use interferometric synthetic aperture radar observations recorded in a land-terminating sector of western Greenland to characterise the ice sheet surface hydrology and to quantify spatial variations in the seasonality of ice sheet flow. Our data
Publikováno v:
Earth and Planetary Science Letters. 262:484-492
A survey of supra-glacial lakes on the western margin of the Greenland Ice Sheet reveals a seasonally-driven hydrological system, culminating in widespread lake drainage in late summer. We used satellite imagery to study the evolution of 292 lakes ac
Autor:
Victoria Lee, Jonathan Rougier, Hartmut Hellmer, Anne M. Le Brocq, Rupert Gladstone, Antony J. Payne, Andrew Shepherd, Jonathan M. Gregory, Tamsin L. Edwards, Stephen Cornford
Publikováno v:
Earth and Planetary Science Letters
A flowline ice sheet model is coupled to a box model for cavity circulation and configured for the Pine Island Glacier. An ensemble of 5000 simulations are carried out from 1900 to 2200 with varying inputs and parameters, forced by ocean temperatures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f86994efdb3290e44609331e915afb7
https://cronfa.swan.ac.uk/Record/cronfa32224
https://cronfa.swan.ac.uk/Record/cronfa32224
Publikováno v:
McMillan, M, Shepherd, A, Nienow, P & Leeson, A 2011, ' Tide model accuracy in the Amundsen Sea, Antarctica, from radar interferometry observations of ice shelf motion ', Journal of Geophysical Research, vol. 116, C11008, pp. 1-16 . https://doi.org/10.1029/2011JC007294
This study assesses the accuracy of tide model predictions in the Amundsen Sea sector of West Antarctica. Tide model accuracy in this region is poorly constrained, yet tide models contribute to simulations of ocean heat transfer and to the removal of
Autor:
Bernd Kulessa, Laurie Padman, G. Hilmar Gudmundsson, Keith W. Nicholls, Peter Clarke, Matt A. King, Noel Gourmelen, Andrew Shepherd
Publikováno v:
Journal of Geophysical Research. 116
Ocean tides under the large Weddell Sea ice shelves are among the least well observed on Earth. Here we present new, spatially extensive observations of the vertical tidal motion of the Filchner-Ronne and Larsen C ice shelves using Global Positioning
Publikováno v:
Palmer, S J, Shepherd, A, Sundal, A, Rinnem, E & Nienow, P 2010, ' InSAR observations of ice elevation and velocity fluctuations at the Flade Isblink ice cap, eastern North Greenland ', Journal of Geophysical Research, vol. 115, F04037, pp.-. https://doi.org/10.1029/2010JF001686
The 8500 km(2) Flade Isblink ice cap (FIIC) (81 degrees 15'N, 15 degrees 0'W) is the largest ice cap in Greenland. We use repeat-pass interferometric synthetic aperture radar (InSAR) techniques to investigate the form and flow of the FIIC. European R
[1] A two-dimensional numerical model is used to simulate the dynamics of buoyant, meltwater-rich plumes flowing beneath the ice shelf occupying much of Pine Island Bay, West Antarctica. Recent studies have shown that this ice shelf, along with all o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a18f8c5599dc28ee38b140135027dccd
Satellite observations revealed that beside a rapid thinning, the Larsen B ice shelf (LBIS) was undergoing a significant acceleration before its collapse in 2002. This paper investigates the ice shelf acceleration between 1995 and 1999 using a combin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac126a9b5ed7f3f85cfa9f2cd3a822e3
https://www.zora.uzh.ch/id/eprint/136288/
https://www.zora.uzh.ch/id/eprint/136288/